0ZCE_13 BEL
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defining a degree of excellence 0805 chip bel Surface Mount PTC escounsraarersee (ECE Apasiso OZCE Series _ notrecommended for new applications. Please use 0ZCK [HF]@8 OZCE Series Fuse & Ws ” / a j 6- 15V (per table) i , 40°C to 85°C x TUV (Std. EN60738-1-1 , Cert. R50102117) — UL Component (Std. UL1434, File E305051) Ps a al UL Conditions of Acceptability: = — ———— _ 1.These devices have been investigated for use in safety circuits and are suitable as a limiting device. — 2.These devices have been calibrated to limit the current to 8 amps within 5 All high-density boards seconds , per ANSI/NFPA 70, “National Electrical Code"
0805 Chip Size , Fast Trip Time, Low DCR Resistance aoe [HF]
LEAD FREE = 100mA - 1A Trip Rated | Typical current [Current] Tine | verse [rowe| tan] ime ag] ja [mA | A | Sec | imax. A Vmax, vac| Paw | Ohms | Ohms _| Tov [a[ezeeooirr2e| 010 | 030 | ose | 150 | wo | 15 | oso | oreo | owe | y |v | [s|zceonzerr20| 020 | 030 | oo | oor | 10 | © | 0x0 | eae | aso | y |v | [c|zceonssrr2c| 03s | 75 | ao0 | os | 10 | 6 | oso | oa | 120 | y |v | || ezceoosoreze| oso | 100 | soo | oso | to | 6 | oso | sso | oso | vy | vy | [e|ezceoorserar| 07s | 150 | 00 | oa | «| 6 | oso | ome | eas | y |v | tH Hold Current-maximum current at which the device will not trip in still air at 23°C. Ir Trip current-minimum current at which the device will always trip in still air at 23°C. Imax Maximum fault current device can withstand without damage at rated voltage (Vmax). Vmax Maximum voltage device can withstand without damage at its rated current. Pd Typical power dissipated by device when in tripped state in 23°C still air environment. Rmin _—_ Minimum device resistance at 23°C. Rimax Maximum device resistance at 23°C, 1 hour after initial device trip, or after being soldered to PCB in end application. Speciteations subject change without notice Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 + Tel: 201-432-0463 « Fax: 201-432-9542 - E-Mail: belfuse@belf.com Website: www.belfuse.com
Surface Mount PTC ARoHtS8 Compliant & Halogen Free OZCE Series (REI@D 0ZCE Apr2013¢ PTC’s — Basic Theory of Operation / “Tripped” Resistance Explanation Fundamentally, a Bel PTC consists of a block of polymeric material containing conductive filler and bonded between two conductive, planar terminations. At currents below the device IHOLD rating, AND at temperatures below 100C, the PTC maintains a resistance value below its R1 MAX rating. As the device's temperature approaches 130C, either due to an increase in ambient temperature or a current exceeding its | TRIP rating, volumetric expansion of the filled polymer breaks apart the majority of conductive pathways across the terminals created by chain contact of adjacent filler particles and device resistance increases sharply by several orders of magnitude. At the much higher “Tripped” resistance, there is just enough leakage current to allow internal heating to “hold” the device in its tripped state (around 125C) until power is interrupted. Once power is removed, the PTC's core cools and contracts allowing conductive chains to reform and return the device to its low resistance state. The catalog data for each device specifies a "Typical Power’ value. This is the power required to exactly match the heat lost by the tripped device to its ambient surroundings at 23C. By Ohm's Law, power can be stated as: W = E2/R. Thus the approximate resistance of a “Tripped” PTC can be determined by: R = E*2W, where "E" is the voltage appearing across the PTC (usually the supply's open circuit voltage), and "W" is the Typical Power value for the particular PTC. Since the PPTC acts to maintain a constant internal temperature, its apparent resistance will change based upon applied voltage and, to a lesser degree, ambient conditions. Consider the following example... APTC with a Typical Power of 1 watt protecting a circuit using a 60V supply will demonstrate an apparent, tripped resistance "R" of: R = 6042/1 = 3,600 ohms This same tripped device when used to protect a 12V circuit would now present an apparent resistance of: R = 1242/1 = 144 ohms The value for Typical Power is "typical" because any physical factors that affect heat loss (such as ambient temperature or air convection) will somewhat alter the level of power that the PTC needs to maintain its internal temperature. In short, PTCs do not exhibit a constant, quantifiable tripped resistance value. (See Elec. Characteristics Table for P/N - Curve Correlation) A Bc DE F 100 aaa SSS SS a —_ rr rrr (S| SG A GG wo Kt NAY ft a = eS VS Fe ee ee e —— eR in ES Se £ eS SS a SS = PNET ANSI ATT ot et ft | NI NNN NEN SSS SEES a SS a es ee SO OO A Se SS es SO [Lt ET TTT TT RSS 0.01 01 1 10 Fault Current (A) Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 + Tel: 201-432-0463 + Fax: 201-492-9542 + E-Mail: belfuse@belf.com Website: www.belfuse.com
0805 Chip
be | Surface Mount PTC sessscompiots naagenree aay OZCE Series ® Thermal Derating Curve Cautionary Notes 4. Operation beyond the specified maximum ratings Hold & Trip Current and Thermal Derating Curve of improper use may result in damage and possible electrical arcing and/or flame. 300% 2. These Polymer PTC (PPTC) devices are intended
3 MUTT overtemperatue aul conditions and may not
5 asm | overtemperature fault conditions and may not be = LT] suitable for use in applications where repeated andi 6 | hs Device p and prot or prolonged fault conditions are anticipated. BS 200% LI 3. Avoid contact of PTC device with chemical solvent. Ze [| Prolonged contact may adversely impact the PTC 2 8 . d te p dn é| performance. 150% Fst [_ | = 4, These PTC devices may not be suitable for use in Sa rm nea fl i eal circuits with a large inductance, a the PTC trip can SE am [7] — am, generate circuit voltage spikes above the PTC rated as me voltage. ge eae (| 5. These devices are intended for use in DC voltage a 7 50% bevie maintitt seidtance Staten applications only. Use in AC voltage applications 2 i re should be first discussed with Bel Fuse engineering 2 6. Not recommended for use on potted or conformal % coated PCB's. Restriction of free air flow could affect, 40 20 ° 20 40 60 a0 electrical performance andlor result in device failure Ambient Temperature (‘C) Consult Bel Fuse engineering. 7. In the “Indeterminate Performance / grey zone”, — = 4 tripping may occur but cannot be relied upon. For Hold Current Trip Current ‘special circumstances considering use within this region, consult Bel Fuse Engineering. Mechanical Dimensions sittin’ F { as All dimensions in mm. .20-0.60mm) Figure igure ~y | ty een Ged Soccer ois o cz0ssimm [zemorerr6 [+ [200 [250 [oss [100 — | ~ | | l azcenoaorr2c | 1 |2.00 | 290 | 05 [100 | .. |. | ‘OZCEOOS0FF2E Top and Bottom View Top and Bottora View [2 [2c [220 [oss | 125 | ono [os | ed + ozceoo7srF2e | 2 | 2.00 | 220 | 058 | 128 | 0.10 | os | ¥ x The dimensions in the table below provide the recommended ant pad layout. D-i b", kcode. Part Number ln Code | [am eh am | teh | ne ezceooorrzs | Fr | OZCE0035FF2G ozceoo7srF2e | P| Termination Pad Materials ozceotoorr2e | 1 _—i| Matte Tin - Plated Copper Speciation subject to change without natice eS Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 « Tel: 201-432-0463 + Fax: 201-492-9542 + E-Mail: belfuse@belf.com Website: www.belfuse.com
0805 Chi
Surface Mount PTC RoH98 Compliant & Helogen-Free OZCE Series (HE @® 0ZCE Apr2013D Solder Reflow and Rework Recommendations ge Ramp-Up Rate (Temax to Tp 1 le Prohedt {in| ‘Temperature Min (Tsmin) 150 °C i ‘Temperature Max (Tsmax) 200 *C 1 | aan ‘Time (tsmin to tsmax) [60-180 seconds 2 Pave ‘Time maintained above: = EE \\Temperature(T.) 217 ‘c s Time (u) {60-150 seconds — y~-- [Ramp-down] Peak/Classification Temperature(Tp):|260 ‘C || ‘Time within 5°C of actual Peak : aes | ‘Temperature (tp 20-40 seconds = H t25C to Peak “Tig Time 25°C_to Peak Temperature: _|8minutes max | Solder Reflow Due to " lead free / ROHS6 " construction of these PTC devices , the required Temperature and Dwell Time in the " Soldering "zone of the reflow profile are greater than those used for non-RoHS devices. 14.Recommended reflow methods ; IR , vapor phase oven , hot air oven. 2. Not Recommended For Wave Solder / Direct Immersion. 3. Recommended maximum ; paste thickness is 0.25mm. 4. Devices are compatible with standard industry cleaning solvents and methods. Caution If reflow temperature / dwell times exceed the recommended profile, the electrical performance of the PTC may be affected. Rework : MIL-STD-202G Method 210F. Test Condition A. Standard Packaging [Part Number | TapeiReel Qty] 4000 or 3000 fuses in 7 wide tape, 4mm pitch, PTC series | | Thu per ElA-481 (equivalent OZCE, 0805 Size | 0ZCE0035FF2G 1EC-286 part 3). IHOLD Rating Refer to Part Number and IH Rating in Electrical Characteristics Table on P.1. OZCEOOSOFF2E Elctrical Characteristics Thu F= Standard Design | AtoZ (except F) = Special, customer spec, DCR sort, etc. 0ZCEO100FF2E Mechanical Features, F= Standard Design AtoZ (except F) = Special, customer spec, lead forming, etc. | Tape & Reel Qty ‘See standard packaging ‘Speciteations subject t change without notice CORPORATE OFFICE FAR EAST OFFICE EUROPE OFFICE EUROPE Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd. Bel Stewart GmbH 206 Van Vorst Street 8/F Luk Hop Industrial Building Preston Technology Management Centre Industriestrasse 20 Jersey City, NJ 07302 8 Luk Hop Street Marsh Lane, Suite F15 61381 Friedrichsdorf Tel 201-432-0463 San Po Kong Preston, Lancashire, PR1 8UQ Germany Fax 201-432-9542 Kowloon, Hong Kong United Kingdom Tel 49-6172-9552-0 E-Mail: belfuse@belf.com Tel 852-2328-5515 Tel 44-1772-556601 Fax 49-6172-9552-40 Website: www. belfuse.com Fax 852-2352-3706 Fax 44-1772-561008